Bible Dictionaries
Dioptric

Webster's Dictionary

(1):

(a.) Alt. of Dioptrical

(2):

(a.) Of or pertaining to the dioptre, or to the metric system of numbering glasses.

(3):

(n.) A dioptre. See Dioptre.

Bibliography Information
Webster, Noah. Entry for 'Dioptric'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​d/dioptric.html. 1828.